Update README
Add key* functions to Graphics backend
Add black background logic to Graphics backend
Break Logic.add into Logic.add/addFromString/addFromFile
Update basic Logic code to use new add API
Update Logic parser
Add hash comments to Query parser
Improve entity parsing in World
Use World. instead of this.
Add World.queryFirst
Add $ and $$ globals
Enable remote file adding
Add ajax.js
Add coffeescript.js
Start work on braceless logic blocks

More like CoffeeScript, kind of kludged in though
Move to node
Make misc changes to old files

Will be removed shortly
Store entity tags in _tags object
Simplify Entity.toString for now
Add Entity.addTag, Entity.removeTag